Writing instrument



FIG. 1 is a front view of the first embodiment of a writing instrument showing my new design in the form of a ballpoint pen;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a magnified cross sectional view taken along line 7--7 in FIG. 1;

FIG. 8 is a magnified cross sectional view taken along line 8--8 in FIG. 1;

FIG. 9 is a right side view of FIG. 1 with the writing tip in an extended position;

FIG. 10 is a front view of the second embodiment of the writing instrument of FIG. 1 showing my new design in the form of a mechanical pencil;

FIG. 11 is a rear view of FIG. 10;

FIG. 12 is a right side view of FIG. 10;

FIG. 13 is a top plan view of FIG. 10;

FIG. 14 is a bottom plan view of FIG. 10;

FIG. 15 is a left side view of FIG. 10;

FIG. 16 is a magnified cross sectional view taken along line 16--16 in FIG. 10;

FIG. 17--17 is a magnified cross sectional view taken along line 17--17 in FIG. 10; and,

FIG. 18 is a right side view of FIG. 10 with the writing tip in an extended position. 

The ornamental design for a writing instrument, as shown and described. 